Comtrend Corporation ES-7205 User manual

User Guide
www.comtrend.com
ES-7205 5-port Fast Ethernet Switch
ES-7208 8-port Fast Ethernet Switch

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Preface
This manual provides information related to the installation and operation of this device.
The individual reading this manual is presumed to have a basic understanding of
telecommunications terminology and concepts. If you find the product to be inoperable or
malfunctioning, please contact Comtrend technical support.
Important Safety Instructions
With reference to unpacking, installation, use and maintenance of your electronic device,
the following basic guidelines are recommended:
Do not use or install this product near water, to avoid fire or shock hazard. For
example, near a bathtub, kitchen sink or laundry tub, or near a swimming pool.
Also, do not expose the equipment to rain or damp areas (e.g. a wet basement).
Do not connect the power supply cord on elevated surfaces. Allow it to lie freely.
There should be no obstructions in its path and no heavy items should be placed on
the cord. In addition, do not walk on, step on or mistreat the cord.
Use only the power cord and adapter that are shipped with this device.
To safeguard the equipment against overheating, make sure that all openings in the
unit that offer exposure to air are not blocked.
Avoid using a telephone (other than a cordless type) during an electrical storm.
There may be a remote risk of electric shock from lightning. Also, do not use the
telephone to report a gas leak in the vicinity of the leak.
Never install telephone wiring during stormy weather conditions.
WARNING
Disconnect the power line from the device before servicing.
Copyright
Copyright © May , 2011 Comtrend Corporation. All rights reserved. The information
contained herein is proprietary to Comtrend Corporation. No part of this document may
be translated, transcribed, reproduced, in any form, or by any means without prior written
consent of Comtrend Corporation.
NOTE: This document is subject to change without notice.

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Contents
1. Introduction .................................................................4
1.1 Switch Features............................................................4
1.2 Package Contents........................................................5
1.3 Front and Rear Panel Specifications..........................5
1.4 LED Indicator Specifications.......................................6
2. Installation....................................................................7
2.1 Before Connecting to the Network.............................7
2.2 Connecting to End Nodes ...........................................7
2.3 Switch to Router or Router to Switch.........................8
3. Product Specification..............................................9

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1. Introduction
The ES-7205/ES-7208 Ethernet Switches are designed for
small office, home office (SOHO) applications. They have
five or eight 10/100Mbps Auto-negotiation Ethernet ports,
support auto MDI/MDI-X and store-and-forward
functionality to ensure proper packet forwarding. Plug and
play functionality makes setup hassle-free. In addition,
each switch supports MAC address auto-learning and aging.
The ES-7205 and ES-7208 support up to a 2k MAC address
table.
1.1 Switch Features
Complies with the IEEE802.3 10Base-T Ethernet,
IEEE802.3u 100Base-TX Fast Ethernet standards.
Supports auto-negotiation, auto-detect data rates, and
Half and Full-duplex modes.
Provides five or eight 10/100Mbps Auto-sensing RJ-45
ports and supports Auto MDI/MDI-X.
Supports IEEE802.3x flow control for Full-duplex, and
Backpressure flow control for Half-duplex.
Supports non-blocking line speed forwarding.
Supports store-and-forward switching.
Supports MAC address auto-learning/aging function
2K MAC address table.

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1.2 Package Contents
Please check each item carefully after you open the
packaging:
One 5/8-Port Fast Ethernet Switch
One Power Adapter
One User Guide
If any of the listed items are missing or damaged, please
contact the reseller from whom you purchased for a
replacement.
1.3 Front and Rear Panel Specifications
The front panel of the ES-7205 and ES-7208 Fast Ethernet
Switches includes Link/Act indicators and one power
indicator. Please refer to the detailed description of these
indicators in the LED Indicator Specifications section.
The Rear Panel of the Switch includes five or eight
10/100Mbps RJ-45 Fast Ethernet ports. One AC power port
is located on the side panel of the Switch.
Notice: Only use the included power supply. Using any
other power supply may permanently damage the
Switch.

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1.4 LED Indicator Specifications
The LED indicators on the Switch include Power and
Link/Act. You can see their operating situation through
these LED indicators.
The following chart shows the LED indicators of the Switch
along with an explanation of each indicator.
LED
Color Status Description
Green ON This indicator is lit
when the Switch is
powered on.
Power
— OFF
If this indicator is
not lit, please
check the AC
power connector to
ensure the correct
connection of the
power adapter.
Green ON The Ethernet port
has an active
connection
Link/
Act Green Blinking
The port is
transmitting or
receiving data
packets.

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2. Installation
2.1 Before Connecting to the Network
Before connecting the ES-7205/ES-7208 to the
network, please pay attention to the following
instructions:
Do not put anything on top of the Switch. Place
on a hard, flat surface.
Power sockets and equipment should be within 5
feet of the Switch.
Check power supply to confirm a safe and secure
connection.
Make sure there is adequate space for proper
heat dissipation and adequate ventilation around
the Switch.
2.2 Connecting to End Nodes
Use a standard Ethernet cable to connect the Switch to
end nodes as described below. Switch ports will
automatically adjust to the characteristics (MDI-II/MDI-X,
speed, duplex) of the device to which it is connected
Switch connecting to an end node

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2.3 Switch to Router or Router to Switch
(
shown)
Connecting to another router or switch

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3. Product Specification
Standards IEEE802.3 10Base-T Ethernet
IEEE802.3u 100 Base-TX Fast
Ethernet
Protocol CSMA/CD
Topology Star
Network Cables 10 Base-T: Cat.3 UTP or above
100 Base -TX: Cat.5 UTP /STP
Speed 10/100Mbps
Transmission Method Fast store-and-forward
MAC Address Table 2K
14880pps(10Mbps)per port
Packet Filtering/
Forwarding Rate 148800pps(100Mbps)per port
MAC Address Learning Self-learning, auto-aging.
Backplane Bandwidth 1Gbps(ES-7205)
1.6Gbps(ES-7208)
Power External universal power supply
AC INPUT AC 9V 600mA
Power Consumption 2.7W(ES-7205)
4.2W(ES-7208)
Operating Temperature 0℃-40℃
Storage Temperature -40℃-70℃
Working Humidity 10%～90% RH (non-condensing)
Storage Humidity 5%～95% RH (non-condensing)

Address : 16 Goodyear, Suite 120
Irvine, CA 92618, USA
Warranty : 2 Years
Support : [e-mail]